Manual knife sharpener



FIG. 1 is a perspective view from the front of my new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front end elevation view thereof; and,

FIG. 7 is a back end elevation view thereof. 

CLAIM The ornamental design for a manual knife sharpener, as shown and described. 